Floppy Drive Connector; System Board Power Connector; Battery Jumper - Mitsubishi Electric LS Pro Hardware Technical Reference

System Board
Power connector
Pin
1
2
3
4

Floppy drive connector

Pin
2
3
4
5
6
7
8
9
10
11
12
Note
All other pins are connected to 0 Volts.

System board power connector

Pin
1
2
3
4
5
6
7
8
9
10

Battery jumper

A two position jumper is provided alongside the system board battery. With the
jumper in the position away from the power supply metalwork the battery provides
power to the system board maintaining the contents of CMOS RAM and powering the
Real time clock when mains power is not available.
If the jumper is moved to the position nearest the power supply metalwork battery
power to the system board is disconnected, and the CMOS RAM is discharged.
The jumper is identified in the illustration on page 2/5, and instructions on accessing
the system board are given in section 2.
3/22 LS PRO HARDWARE TECHNICAL REFERENCE
Function
+12 Volts
ground (for +12V)
ground (for +5V)
+5 Volts
Function
density select 1
not connected
not connected
5V
density select 0
5V
index
5V
drive select 0
5V
drive select 1
Function
+12V
+12V
+5V
+5V
0V
0V
0V
0V
-12V
Power good
4 3 2 1
Pin Function
14 drive select 2
16 motor on
18 direction
20 step
22 write data
24 write enable
26 track 00
28 write protect
30 read data
32 head select
34 disk change
2
1
6
10
1
5
34
33